generated from dellevin/template
118 lines
3.4 KiB
Dart
118 lines
3.4 KiB
Dart
import 'package:flutter/foundation.dart';
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import 'package:sqflite/sqflite.dart';
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import '../../models/data_models.dart';
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import '../database_helper.dart';
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/// 书籍摘抄数据访问对象
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class BookExcerptDao {
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final DatabaseHelper _dbHelper = DatabaseHelper.instance;
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Future<T> _wrap<T>(String op, Future<T> Function() fn) async {
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try {
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return await fn();
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} catch (e) {
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debugPrint('[BookExcerptDao] $op error: $e');
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rethrow;
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}
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}
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/// 获取书籍的所有摘抄
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Future<List<BookExcerpt>> getExcerptsByBookId(String bookId) => _wrap('getExcerptsByBookId', () async {
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final db = await _dbHelper.database;
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final maps = await db.query(
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'book_excerpts',
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where: 'book_id = ? AND is_deleted = 0',
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whereArgs: [bookId],
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orderBy: 'created_at DESC',
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);
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return maps.map((map) => BookExcerpt.fromJson(map)).toList();
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});
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/// 根据ID获取摘抄
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Future<BookExcerpt?> getExcerptById(String id) => _wrap('getExcerptById', () async {
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final db = await _dbHelper.database;
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final maps = await db.query(
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'book_excerpts',
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where: 'id = ? AND is_deleted = 0',
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whereArgs: [id],
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);
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if (maps.isNotEmpty) return BookExcerpt.fromJson(maps.first);
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return null;
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});
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/// 插入摘抄
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Future<String> insertExcerpt(BookExcerpt excerpt) => _wrap('insertExcerpt', () async {
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final db = await _dbHelper.database;
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await db.insert(
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'book_excerpts',
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excerpt.toJson(),
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conflictAlgorithm: ConflictAlgorithm.replace,
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);
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return excerpt.id;
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});
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/// 更新摘抄
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Future<void> updateExcerpt(BookExcerpt excerpt) => _wrap('updateExcerpt', () async {
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final db = await _dbHelper.database;
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await db.update(
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'book_excerpts',
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excerpt.toJson(),
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where: 'id = ?',
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whereArgs: [excerpt.id],
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);
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});
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/// 删除摘抄（软删除）
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Future<void> deleteExcerpt(String id) => _wrap('deleteExcerpt', () async {
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final db = await _dbHelper.database;
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await db.update(
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'book_excerpts',
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{'is_deleted': 1, 'updated_at': DateTime.now().toUtc().toIso8601String()},
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where: 'id = ?',
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whereArgs: [id],
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);
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});
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/// 彻底删除摘抄
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Future<void> permanentDeleteExcerpt(String id) => _wrap('permanentDeleteExcerpt', () async {
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final db = await _dbHelper.database;
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await db.delete(
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'book_excerpts',
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where: 'id = ?',
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whereArgs: [id],
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);
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});
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/// 获取摘抄数量
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Future<int> getExcerptCount(String bookId) => _wrap('getExcerptCount', () async {
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final db = await _dbHelper.database;
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final result = await db.rawQuery(
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'SELECT COUNT(*) as count FROM book_excerpts WHERE book_id = ? AND is_deleted = 0',
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[bookId],
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);
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return result.first['count'] as int? ?? 0;
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});
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/// 获取所有已删除的摘抄
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Future<List<BookExcerpt>> getDeletedExcerpts() => _wrap('getDeletedExcerpts', () async {
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final db = await _dbHelper.database;
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final maps = await db.query(
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'book_excerpts',
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where: 'is_deleted = 1',
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orderBy: 'updated_at DESC',
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);
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return maps.map((map) => BookExcerpt.fromJson(map)).toList();
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});
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/// 恢复已删除的摘抄
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Future<void> restoreExcerpt(String id) => _wrap('restoreExcerpt', () async {
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final db = await _dbHelper.database;
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await db.update(
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'book_excerpts',
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{'is_deleted': 0},
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where: 'id = ?',
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whereArgs: [id],
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);
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});
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}
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